Jack is the founder of Zook Dinon PA and Professor Emeritus of Accounting at La Salle University.
Jack currently serves on the Saint Joseph’s University Board of Trustees. He has served as a Past Chairman of the National Club Association in Washington, D.C. (2012-2013), a Past President of the Union League of Philadelphia (2008-2010), a Past Board Member and Treasurer of Delaware Valley Habitat for Humanity (1999-2005) and a Past Board Member and audit Committee Chair of the Philadelphia Investment Partners New Generation Fund (2011-2016).